Bibliometric information retrieval in databases can employ different strategies. Com-monly, queries are performed by searching in title, abstract and/or author keywords (author vocabulary). More advanced queries employ database keywords to search in a controlled vo-cabulary. Queries based on search terms can be augmented with their citing papers if a re-search field cannot be curtailed by the search query alone. Here, we present another strategy to discover the most important papers of a research field. A marker paper is used to reveal the most important works for the relevant community. All papers co-cited with the marker paper are analyzed using reference publication year spectroscopy (RPYS). For demonstration of the marker paper approach, density functional theory (DFT) is used as a research field. Compari-sons between a prior RPYS on a publication set compiled using a keyword-based search in a controlled vocabulary and three different co-citation RPYS (RPYS-CO) analyses show very similar results. Similarities and differences are discussed.

中文翻译：

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用记号纸发现开创性的作品

数据库中的文献计量信息检索可以采用不同的策略。通常，通过搜索标题、摘要和/或作者关键字（作者词汇）来执行查询。更高级的查询使用数据库关键字在受控词汇表中进行搜索。如果不能仅通过搜索查询来缩减再搜索领域，则可以使用其施引论文来扩充基于搜索词的查询。在这里，我们提出了另一种发现研究领域最重要论文的策略。标记纸用于揭示相关社区最重要的作品。使用参考出版年份光谱 (RPYS) 分析与标记论文共同引用的所有论文。为了演示标记纸方法，密度泛函理论 (DFT) 被用作研究领域。在受控词汇表中使用基于关键字的搜索编译的出版物集上的先前 RPYS 与三种不同的共引 RPYS (RPYS-CO) 分析之间的比较显示出非常相似的结果。讨论了相同点和不同点。